55555500550506 has 48 divisors (see below), whose sum is σ = 129314407727232. Its totient is φ = 15844706035840.

The previous prime is 55555500550499. The next prime is 55555500550513. The reversal of 55555500550506 is 60505500555555.

It is an interprime number because it is at equal distance from previous prime (55555500550499) and next prime (55555500550513).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2250656130 + ... + 2250680813.

It is an arithmetic number, because the mean of its divisors is an integer number (2694050160984).

Almost surely, 2^{55555500550506} is an apocalyptic number.

55555500550506 is an abundant number, since it is smaller than the sum of its proper divisors (73758907176726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55555500550506 is a wasteful number, since it uses less digits than its factorization.

55555500550506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4501336987 (or 4501336976 counting only the distinct ones).

The product of its (nonzero) digits is 11718750, while the sum is 51.

The spelling of 55555500550506 in words is "fifty-five trillion, five hundred fifty-five billion, five hundred million, five hundred fifty thousand, five hundred six".